Zenkichi Kojima

is a Japanese former politician who served as the mayor of Shizuoka City from 1994 to 2011, when he was succeeded by Nobuhiro Tanabe. A graduate of the University of Tokyo, he was first elected mayor in 1994 after serving in the assembly of Shizuoka Prefecture for three terms. He served as the first mayor of Shizuoka City after Shizuoka's merger with Shimizu in 2003.

In 1971, after college, he went to work at the Dai-Ichi Kangyo Bank (now Mizuho Bank) where he stayed until 1979. In 1979 he was elected to the Shizuoka Prefectural Assembly.